All Articles
Your Rork iOS App Won't Build After Adding AdMob Mediation — Untangling Linker Errors and No-Fill Ads
Added Unity Ads, Liftoff, or InMobi mediation adapters to your Rork/Expo iOS app and suddenly hit ld linker errors or ads that never fill? Here's how to isolate the cause by symptom and fix each layer.
Guarding Analytics Events With Types Across Six Rork Apps — A Shared Event Layer
After event names drifted across six apps and quietly broke my dashboards, I built a typed event registry and a thin wrapper to centralize tracking, plus a CI check that catches schema drift. Here is the design, with the code I actually use.
Fixing 'No bundle URL present' on a Release Build to a Real iOS Device
How to read the 'No bundle URL present' error that shows up when you build a Rork-exported app locally in Xcode. We separate the Metro-connection case from the missing-embedded-bundle case, and walk through generating an offline bundle by hand with working commands.
Measuring the Real eCPM Yourself: Piping Impression-Level Ad Revenue Into Your Own Analytics
The AdMob dashboard's average eCPM hides which regions and placements actually earn. Here is how I capture per-impression revenue with paidEventListener, normalize it, and pipe it into my own analytics to compute a real eCPM by network, placement, and country.
Shipping Six Wallpaper Apps From One Codebase: A White-Label Build Setup with app.config.ts and EAS
Maintaining near-identical wallpaper apps in separate repos means every fix has to be copied six times — and one day you miss one. Here is the white-label setup I moved to: one codebase that emits six apps through a single APP_VARIANT, with the real app.config.ts and eas.json, plus a validation script that catches config drift before the build runs.
When Your Android Vitals ANR Rate Climbs: Notes on Keeping the Main Thread Free in React Native
How I traced and fixed a rising Android Vitals ANR rate in a Rork-built React Native app, plus the main-thread rules I rolled out across six apps in production.
Fixing 'JavaScript heap out of memory' in Metro and EAS Builds
Your Rork or Expo build dies with 'FATAL ERROR: Reached heap limit Allocation failed - JavaScript heap out of memory.' Here is why it happens and exactly how to fix it, both locally and on EAS Build.
Managing Startup Time as a Budget: How I Deferred SDK Init Across Six Apps
Instead of optimizing startup ad hoc, I switched to allocating a per-phase time budget and defending it. Here's how I deferred SDK init across six Rork-built apps and added a CI gate that fails the build when the budget is exceeded.
Running Crash-Free Rate as a Budget: An SLO Design Note for Deciding Where to Invest Across 6 Indie Apps
Notes from running 6 wallpaper apps in parallel and the shift from treating crash-free rate as a pass/fail threshold to treating it as an error budget. A working write-up on turning burn rate into investment and sunset decisions.
Managing Native Settings Across Rork-Exported Apps with a Custom Expo Config Plugin
Tired of re-typing your AdMob ID and ATT string every time prebuild wipes your Info.plist? Here is how I made native settings reproducible with a custom Expo config plugin and shared it across six wallpaper apps.
Fixing 'TurboModuleRegistry.getEnforcing could not be found' in Rork
A practical walkthrough of the 'TurboModuleRegistry.getEnforcing(...): could not be found' error that became common once the New Architecture went default. Covers Expo Go vs. dev builds, when a native rebuild is required, and how to isolate libraries that aren't New Architecture-ready.
Growing a Staged OTA Update System Without Breaking It
Shipping an EAS Update to every user at once is dangerous. From channel design to staged rollout to automatic rollback, here is the delivery architecture I settled on across 50M cumulative downloads, with working code.